Universal machine for canting and circular-bending



A. WACHT ER 1,944,651

UNIVERSAL MACHINE FOR CANTING AND. CIRCULAR BENDING Jan. 23, 1934.

Filed July 25, 1932 Patented Jan. 23, 1934 UNITED STATES 1,944,651PATENT OFFICE UNIVERSAL MACHINE FOB CANTING AND CIRCULAR-BENDING AugustWachter, Weingarten, Germany, assignor to the firm MaschinenfabrikWeingarten vorm. Hch. Schatz A. G., Weingarten, Germany Application July25, 1932, Serial No. 824,626, and

,in Germany 2 Claims.

all necessary kinds of cantings and circular bend-- ings. If, forinstance, low steps with long shanks are to be bent, which frequentlyoccurs inthe construction of door-frames, one is obliged by the hithertoexisting machines for canting and circular bending to affix on thebending cheek which is considerably distant from the center of the bendto be produced especially long and thin bend ing rails which are onlyapplicable for a shank of short length and are not suitable for theproduction of sharp-edged bends on account of the resiliency of the highthin bending rails.

By the present invention is accomplished, that all necessary kinds. ofbends, especially low steps with long shanks, can be bent by a singlebending machine. This is brought about in such a way, that the bendingcheek is not only, as it is hitherto known, adjustably arranged in thevertical direction, but also transversely to its. level in a horizontaldirection, so that it can be exactly adjusted by its horizontaladjustment transversely to its level on the corresponding bending leverarm to the strength and step of the sheet to be bent.

The preferred form ofembodiment of the invention is illustrated in theaccompanying drawing, of which Fig. 1 is a partial front view of thebending cheek with its guide and adjustment device.

Fig. 2 is a horizontal section of the right part of Fig. 1 through thebending cheek, bending cheek arms, guide pieces and nuts.

Fig. 3 is a side view partially in section through 40 the right bearingside of the bending cheek according to the invention.

Fig. 4 is a vertical section through the upper cheek, lower cheek andbending cheek.

According to the drawing, the bending cheek a in which the bending railb is fitted is adjustably guided in guide-pieces 0 within the bendingcheek arms d. The adjustment of the bending cheek in a verticaldirection is carried out by screwspindles and nuts in a customary way.

According to the invention the bending check a is adjustable in ahorizontal direction transversely to its level in such a manner, thattwo screw-collars e are screwed on the left and right bearing-side ofthe bending cheek, provided with respective threads and are rotatable onthe spindle-nuts 2', provided with pivots. By means of the nuts gscrewed on the ends of the pivots the screw-collars e are pressedagainst the bending 6 cheek arms d in order to produce a rigid con-August 6, 1931 nection between the bending cheek a and the arms (1.

For the purpose of adjusting the bending cheek in a horizontal directionthe tension-nuts g and. locking-nuts j'must first be loosened and afteradjustment which is brought about by turning the screw-collars e, theyare again tightened.

The rails or slides c in the bending cheek arms d serve for the preciseguiding of the bending cheek shaped grooves h (Fig. 1) a in whichcorresponding T-shaped shoulders or lugs of the guiding piece 0 are fit,so-that by this means a rigid connection between the bending check a andthe pieces 0 or by the latter with the bending cheek arms 11 in alongitudinal direction of the bending cheek is obtained. 1 y

In Fig. 3 of the drawing, the limits of the horizontal adjustment of thebending cheek are indicated at ,/Z. being adjusted, as at l, for itsshortest throw in a bending operation, and in dotted lines, as at s, forits longest throw. In Fig. 4 the operation of the bending check isindicated with the cheek adjusted for its shortest throw, the movementof the cheek in upsetting the metal is indicated by broken lines.

. Having described my invention, I claim: I 1. A bendingdevicecomprising, opposite supporting arms having longitudinal grooves intheir inner faces, a bending cheek mounted between the arms with itsends movable in the grooves,

pivot blocks adjustable longitudinally of the supporting arms, andexteriorly screw-threaded col- In full lines the cheek is shown asv larsrotatable on the pivot blocks and engaging v the cheek to adjust saidcheck transversely of the grooves in the supporting arms.

2. A bending device comprising opposite supporting arms havinglongitudinal grooves in their inner faces, slides movable along saidgrooves, a

bending cheek mounted between the supporting arms with its ends providedwith transverse grooves, lugs projecting from the inner faces of theslidesand engaging the grooves in the ends of the cheek to guide thecheek transversely of the slides, pivot blocks adjustable longitudinallyof the supporting arms, and exteriorly screwthreaded collars rotatableon the pivot blocks and engaging the cheek to adjust said checktransversely of the slides. j v

' AUG. WACHTER.

